My father in law just brought his 318 over and it had the "Surge" going on....Some good old cleaning of the air passages and jets and it was good to go! It was pouring gas down the throat of the carb everytime it would surge low.....
Also, they say that the split intake manifold will start to leak after time on these so keep an eye out for that.
I did a repower on my 318 with a kohler Command 20 and getting ready to do the same wit my 420...
Both blew rods at around 1800 hrs...
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